京津冀地区臭氧与温度的关系研究  

Investigations of relationship between surface ozone and temperature in the Beijing-tianjin-hebei region

作　　者：朱晓婉 刘湘雪 吴进[1] 邱雨露 李颖若 马志强 ZHU Xiao-wan;LIU Xiang-xue;WU Jin;QIU Yu-lu;LI Ying-ruo;MA Zhi-qiang(Beijing Weather Forecast Center,Beijing 100089,China;Institute of Urban Meteorology,China Meteorological Administration,Beijing 100089,China;Beijing Shangdianzi Regional Atmosphere Watch Station,Beijing 101507,China)

机构地区：[1]北京市气象台,北京100089 [2]北京城市气象研究院,北京100089 [3]上甸子国家大气本底站,北京101507

出　　处：《中国环境科学》2024年第9期4778-4785,共8页China Environmental Science

基　　金：国家自然科学基金资助项目(42207115,42275199,42307150)。

摘　　要：为探究气象条件对臭氧(O_(3))长期变化趋势的影响,基于京津冀地区多站点长时间序列污染物和气象观测数据对两种气候惩罚因子进行统计分析.结果表明,2016年之后,京津冀地区O_(3)对温度的敏感性增强.对比2016年前后两个时期(2010~2015年,P2;2016~2020年,P3)的区域气象条件发现高温是导致这种现象的主要气象原因.P3时期的高温日数出现频率比P2时期偏高0.6%~5.1%,而这种高温日的频繁发生与京津冀地区在P3时期受焚风影响增多有关.P3阶段具备焚风发生条件的日数频率是P2时期的2.7倍,焚风条件下高温天气的发生频率是非焚风条件下的1.0~1.9倍.这种O_(3)对温度的敏感性增强意味着一旦气象条件有利于O_(3)污染的发生,O_(3)浓度会在短时间内达到与温度相关的最大反应速率,从而使高浓度O_(3)维持更长时间.与北京相比,京津冀其他地区的O_(3)污染形势更为严峻,需持续加强区域污染的联防联治,协同减排.To investigate the influence of meteorological conditions on long-term ozone (O_(3)) trends,two climate penalty factors were analyzed with observed pollutant and meteorological data from multiple stations in the Beijing-tianjin-hebei region.Results demonstrated that the sensitivity of O_(3) to temperature enhanced after 2016.Compared the two periods before and after 2016(2010~2015,P2;2016~2020,P3),we found that high-temperature weather contributed to this phenomenon.The frequency in high-temperature days in the P3 period was 0.6%~5.1%higher than that in the P2 period,which was related to the enhanced influence of foehn on the plain areas during the P3period.The occurrence frequency of foehn in the P3stage was 2.7 times higher than that in the P2 stage,and the occurrence frequency of high-temperature weather under the foehn condition was 1.0~1.9times higher than that under the non-foehn condition.The enhanced sensitivity of O_(3) to temperature indicated that once the meteorological conditions are favorable for O_(3) pollution,the O_(3) concentration will peak in a short time,and the high concentration of O_(3) can be maintained for a longer time.In contrast to Beijing,pollution in other areas of the Beijing-tianjin-hebei region was severer than Beijing,and joint prevention need to be continuously strengthened.

关 键 词：臭氧 温度 焚风 气候惩罚因子 

分 类 号：X51[环境科学与工程—环境工程]